MOBI is the name given to the format developed for the MobiPocket Reader. It is currently used by Amazon with a slightly different DRM scheme and called AZW.
Learn more about this file format here
GroupDocs.Editor (in GroupDocs.Editor.dll) Version: 188.8.131.52
public static readonly EBookFormats Mobi
Public Shared ReadOnly Mobi As EBookFormats
static initonly EBookFormats Mobi
static val Mobi: EBookFormats